Dear Mercedes,

I didnt check in my work the exact moment where the swim bladder separates
from the digestive tract, but you will find some good information in this
paper:

SARASQUETE M.C., POLO A., YUFERA M., 1995. Histology and histochemistry of
the development of the digestive system of larval gilthead seabream, Sparus
aurata L..
AQUACULTURE 130 (1995) 79-92

I can, if you need, send you over some papers of our laboratory on liver
and pancreas organogenesis in Sparus aurata, Dicentrarchus labrax and
Stizostedion lucioperca.

cheers - Alois



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Alois Maurizi
Laboratoire de biologie animale (cc.102)          ><>    ><>
Université Montpellier II
34095 Montpellier  -  cedex 5             ><>       ><>
France

Tel. ++33-04.67.14.36.77
Fax. ++33-04.67.14.36.75  ou  04.67.14.35.95   <><

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